Feeding device for die cutting machine

Abstract

The utility model relates to the technical field of die-cutting equipment, and in particular to a feeding device for a die-cutting machine. It comprises a U-shaped feeding rack and a conveying feeding mechanism, wherein the conveying feeding mechanism is arranged on one side of the U-shaped feeding rack, and a tray is slidably carried on the conveying feeding mechanism, and a plurality of cardboards to be processed are stacked on the pallet, and a U-shaped limiting plate is provided on the pallet to prevent the cardboards from falling, and the conveying feeding mechanism comprises a conveying component, a sorting limiting component and a feeding lifting component. The utility model provides a feeding device for a die-cutting machine, which, through the design of the conveying component, enables the staff to only use a ground bull or a small electric forklift to push the pallet into the feeding device to complete the subsequent automatic feeding of the cardboard. Through the design of the sorting limiting component, the conveyed cardboard is aligned and sorted, and the position of the cardboard during lifting and feeding is limited, thereby ensuring the accuracy of the cardboard die-cutting position.

Description

Technical Field

[0001] The utility model relates to the technical field of die-cutting equipment, in particular to a feeding device for a die-cutting machine. Background Art

[0002] The working principle of the die-cutting machine is to use a steel knife, steel wire (or a template carved from a steel plate) to apply a certain pressure through the stamping plate to cut the printed product or cardboard into a certain shape. Pressing and cutting the entire printed product into a single graphic product is called die-cutting.

[0003] Most of the existing die-cutting machines are semi-automatic, requiring workers to feed the cardboard to be processed into the die-cutting machine for die-cutting. The workers need to pick up the cardboard on the tray and put it into the feeding device of the die-cutting machine many times. The long operation process increases the labor intensity of the workers, making them easily feel tired during the operation, and the waist is easily injured. The actual use effect of the device is poor;

[0004] Moreover, the position of the cardboard in the existing die-cutting machine is often not limited during the feeding process, which causes the cardboard position to be easily offset during the feeding process, resulting in inaccurate die-cutting position during cardboard die-cutting, which easily affects the molding quality of the cardboard after die-cutting;

[0005] On the other hand, in the process of feeding, the existing die-cutting machines mostly use needles to feed the stacked cardboards one by one. The feeding method of piercing the cardboards with needles can easily cause unnecessary damage to the surface of the cardboards, affecting the molding quality of the cardboards after die-cutting.

[0006] To this end, we design a feeding device for a die-cutting machine to provide another technical solution to the above technical problems. Utility Model Content

[0007] Based on this, it is necessary to provide a feeding device for a die-cutting machine that is easy to feed and has high die-cutting quality in order to solve the above technical problems.

[0008] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0009] A feeding device for a die-cutting machine comprises a U-shaped feeding frame and a conveying feeding mechanism, wherein the conveying feeding mechanism is arranged on one side of the U-shaped feeding frame, a tray is slidably carried on the conveying feeding mechanism, a plurality of cardboards to be processed are stacked on the tray, a U-shaped limiting plate is provided on the tray to prevent the cardboards from falling, and the conveying feeding mechanism comprises a conveying component, a sorting limiting component and a feeding lifting component.

[0010] Preferably, the conveying assembly includes guide rails arranged on both sides of the U-shaped loading rack, a slide groove is arranged on the opposite side of the two guide rails, a plurality of rollers are arranged inside the slide groove, a rotating shaft is fixedly arranged in the middle of the plurality of rollers, a mounting groove is arranged on the back side of the guide rail, one side of the rotating shaft is rotatably connected to the inner wall of the slide groove, and the other side of the rotating shaft passes through the slide groove and is rotatably connected to the inner wall of the mounting groove;

[0011] A sprocket 1 and a sprocket 2 are fixed to a rotating shaft 1 located in the middle of the guide rail on one side away from the roller 1 in sequence, and a sprocket 3 and a sprocket 4 cooperating with the sprocket 1 and the sprocket 2 are respectively provided on multiple rotating shafts 1 located on both sides of the rotating shaft 1, and chains for transmission are meshed on the outside of the sprocket 1, the sprocket 2, the sprocket 3 and the sprocket 4, and opposite ends of the two rotating shafts 1 pass through the slide groove and are fixedly connected to a transmission shaft, and one end of one of the rotating shafts 1 passes through the mounting groove 1 and is connected to a driving motor 1.

[0012] Preferably, the sorting and limiting assembly includes an electric cylinder 1 arranged inside the U-shaped loading rack, and a mounting groove 2 is opened on the U-shaped loading rack for facilitating the placement of the electric cylinder 1. The output end of the electric cylinder 1 is fixedly connected with a sorting push plate for sorting cardboards, and a plurality of rollers 2 are rotatably connected on the opposite side of the two sorting push plates, and a plurality of L-shaped guide sliders are fixedly provided on the back side of the sorting push plate, and a plurality of guide blocks matching the L-shaped guide sliders are provided on the outside of the mounting groove 2, and a guide slide groove 1 matching the L-shaped guide slider is provided inside the mounting groove 2 and the guide block, and the sorting push plate is clamped on the mounting groove 2 and the guide block through a plurality of L-shaped guide sliders.

[0013] Preferably, the loading and lifting assembly includes a plurality of loading and lifting plates arranged on one side of the sorting and limiting assembly, the tray and the U-shaped limiting plate are provided with a plurality of through grooves matched with the loading and lifting plates, the bottom of the loading and lifting plates is provided with a plurality of reinforcing strips, both ends of the reinforcing strips are fixedly connected with sliders, the U-shaped loading rack is provided with a guide slot 2 matched with the slider, a plurality of adjusting screws 1 are rotatably connected in the guide slot 2, and the slider is threadedly connected to the adjusting screw 1;

[0014] A mounting groove three is provided at the bottom of the guide slide groove two, one end of the plurality of adjusting screws one passes through the guide slide groove two and is rotatably connected to the inner wall of the mounting groove three, a section of the adjusting screw one located in the mounting groove three is fixedly connected to a driven gear, two driven gears are meshed with each other, one side of one of the driven gears is meshed with a driving gear, a rotating shaft two is fixedly provided at the middle of the driving gear, one end of the rotating shaft two is rotatably connected to the inner wall of the mounting groove three, the other end of the rotating shaft two is connected to a driving motor two, the driving motor two is fixedly arranged in the mounting groove three, a section of the rotating shaft two located at the bottom of the driving gear is fixedly provided with a synchronous pulley one, and a synchronous belt for transmission is sleeved on the synchronous pulley one.

[0015] Preferably, a pushing assembly is provided inside the U-shaped loading rack to facilitate the sequential discharging of paperboards, and the pushing assembly includes a discharging pushing plate and a receiving plate, the top of the discharging pushing plate is fixedly provided with an electric cylinder 2, and the U-shaped loading rack is provided with a groove matching the electric cylinder 2, the output end of the electric cylinder 2 is fixedly connected with a pushing plate for pushing the paperboard, and the top of the receiving plate is rotatably connected with a receiving roller for flattening the paperboard. The U-shaped loading rack is provided with a plurality of rollers 3 that cooperate with the pushing plate and the receiving roller to convey the paperboard, the top ends of the pushing plate and the receiving roller are on the same horizontal line, and the U-shaped loading rack is provided with a guide slide groove 3 matching the discharging pushing plate and the receiving plate, the discharging pushing plate and the receiving plate are slidably clamped inside the guide slide groove 3, and the guide slide groove 3 is rotatably connected with an adjusting screw 2, and the discharging pushing plate and the receiving plate are both threadedly connected to the adjusting screw 2.

[0016] Preferably, one end of the adjusting screw rod 2 is rotatably connected to the inner wall of the guide slide groove 3, and the other end of the adjusting screw rod 2 passes through the guide slide groove 3 and extends to the outside of the U-shaped loading rack. An L-shaped mounting plate is fixedly arranged on the top of the U-shaped loading rack, and a driving motor 3 is fixedly arranged on the L-shaped mounting plate. The output end of the driving motor 3 passes through the L-shaped mounting plate and is fixedly connected to one of the adjusting screw rods 2, wherein a synchronous pulley 2 and a synchronous pulley 3 are sequentially arranged on the adjusting screw rod 2 located on the discharging push plate, and a synchronous pulley 4 cooperating with the synchronous pulley 3 is fixedly arranged on the adjusting screw rod 2 located on the receiving plate, and a synchronous belt for transmission is sleeved on the synchronous pulley 2, the synchronous pulley 3 and the synchronous pulley 4.

[0017] It can be seen without a doubt that the above-mentioned technical solution of the present application can definitely solve the technical problem to be solved by the present application.

[0018] At the same time, through the above technical solutions, the utility model has at least the following beneficial effects:

[0019] 1. The utility model provides a feeding device for a die-cutting machine. Through the design of the conveying component, the staff only needs to use a ground bull or a small electric forklift to push the pallet into the feeding device to complete the subsequent automatic feeding of the cardboard, thereby avoiding waist injuries caused by repeated manual lifting of the cardboard for feeding, and improving the actual use effect of the device.

[0020] 2. The utility model provides a feeding device for a die-cutting machine, which aligns and arranges the conveyed cardboard through the design of the arranging and limiting components, and limits the position of the cardboard when it is lifted and fed, thereby ensuring the accuracy of the cardboard die-cutting position and improving the molding quality of the cardboard after die-cutting.

[0021] 3. The utility model provides a feeding device for a die-cutting machine, which, through the design of a feeding lifting component, lifts up the cardboards piled on the tray, so that the cardboards are separated from the tray, which is convenient for subsequent die-cutting processing of the cardboards.

[0022] 4. The utility model provides a feeding device for a die-cutting machine. Through the design of a pushing assembly, the cardboards piled on the feeding lifting assembly are pushed forward in sequence, so that they are transported one by one through roller three and a receiving roller to the die-cutting machine for die-cutting, which effectively avoids the damage to the cardboard caused by traditional needle feeding and further improves the molding quality of the cardboard after die-cutting. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0024] Figure 1 This is a schematic diagram of the axial structure of the utility model;

[0025] Figure 2 It is a rear view structural schematic diagram of the utility model;

[0026] Figure 3 It is a schematic diagram of a half-section structure of the utility model;

[0027] Figure 4 It is a structural schematic diagram of the conveying assembly of the utility model;

[0028] Figure 5 It is a structural schematic diagram of the arrangement and limiting assembly of the utility model;

[0029] Figure 6 It is a structural schematic diagram of the material loading and lifting assembly of the utility model;

[0030] Figure 7It is a structural schematic diagram of the pusher assembly of the utility model;

[0031] Figure 8 It is a structural schematic diagram of the driving part of the pusher assembly of the utility model.

[0032] In the figure: 1, U-shaped loading rack; 2, tray; 3, cardboard; 4, U-shaped limit plate; 5, guide rail; 6, slide groove; 7, roller 1; 8, rotating shaft 1; 9, mounting groove 1; 10, sprocket 1; 11, sprocket 2; 12, sprocket 3; 13, sprocket 4; 14, chain; 15, transmission shaft; 16, driving motor 1; 17, electric cylinder 1; 18, mounting groove 2; 19, sorting push plate; 20, roller 2; 21, L-shaped guide slider; 22, guide block; 23, guide slide groove 1; 24, loading lifting plate; 25, through groove; 26, reinforcement strip ; 27. Slider; 28. Guide slide groove 2; 29. ​​Adjustment screw 1; 30. Mounting groove 3; 31. Driven gear; 32. Drive gear; 33. Rotating shaft 2; 34. Drive motor 2; 35. Synchronous pulley 1; 36. Discharge push plate; 37. Receiver plate; 38. Electric cylinder 2; 39. Groove; 40. Push plate; 41. Receiver roller; 42. Roller 3; 43. Guide slide groove 3; 44. Adjustment screw 2; 45. L-shaped mounting plate; 46. Drive motor 3; 47. Synchronous pulley 2; 48. Synchronous pulley 3; 49. Synchronous pulley 4. DETAILED DESCRIPTION

[0033] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0034] Embodiment 1

[0035] Reference Figure 1-8 A feeding device for a die-cutting machine comprises a U-shaped feeding frame 1 and a conveying feeding mechanism, wherein the conveying feeding mechanism is arranged at one side of the U-shaped feeding frame 1, and a pallet 2 is slidably carried on the conveying feeding mechanism, and a plurality of cardboards 3 to be processed are stacked on the pallet 2, and a U-shaped limiting plate 4 is provided on the pallet 2 to prevent the cardboards 3 from falling. The conveying feeding mechanism comprises a conveying component, a sorting limiting component and a feeding lifting component. Specifically, in the utility model, the position of the cardboard 3 transported on the pallet 2 is limited by the design of the U-shaped limiting plate 4, so as to prevent it from sliding off the pallet 2 due to external force during transportation, thereby improving the stability of the cardboard 3 during transportation.

[0036] Reference Figure 2-4The conveying assembly includes guide rails 5 arranged on both sides of the U-shaped loading rack 1, and a slide groove 6 is arranged on the opposite side of the two guide rails 5. A plurality of rollers 7 are arranged inside the slide groove 6, and a rotating shaft 8 is fixed in the middle of the plurality of rollers 7. A mounting groove 9 is arranged on the back side of the guide rail 5, and one side of the rotating shaft 8 is rotatably connected to the inner wall of the slide groove 6, and the other side of the rotating shaft 8 penetrates the slide groove 6 and is rotatably connected to the inner wall of the mounting groove 9;

[0037] A sprocket 10 and a sprocket 2 11 are fixedly arranged on the side of the rotating shaft 8 located in the middle of the guide rail 5 away from the roller 7 in sequence, and a sprocket 3 12 and a sprocket 4 13 cooperating with the sprocket 10 and the sprocket 2 11 are respectively arranged on the multiple rotating shafts 8 located on both sides of the rotating shaft 8, and the sprocket 10, the sprocket 2 11, the sprocket 3 12 and the sprocket 4 13 are all meshed with a chain 14 for transmission on the outside, and the opposite ends of the two rotating shafts 8 pass through the slide groove 6 and are fixedly connected to a transmission shaft 15, and one end of one of the rotating shafts 8 passes through the mounting groove 9 and is connected to a driving motor 16. Specifically, in the utility model, through the design of the conveying component, the staff only needs to use a ground bull or a small electric forklift to push the pallet 2 into the guide rail 5, and control the fork of the ground bull or the small electric forklift to descend, so that the pallet 2 is placed on the guide rail 5, and the pallet 2 and the cardboard 3 carried on the guide rail 5 can be conveyed through the cooperation of the roller 17, the rotating shaft 18, the sprocket 10, the sprocket 2 11, the sprocket 3 12, the sprocket 4 13, the transmission shaft 15 and the driving motor 16, thereby avoiding waist injuries caused by repeated manual lifting of the cardboard 3 for loading, and improving the actual use effect of the device;

[0038] It should be noted that in the present invention, when the staff drives the pallet 2 to move by means of a ground ox or a small electric forklift, the cardboard 3 on the pallet 2 collides with the inner wall of the U-shaped limiting plate 4 under the action of the inertia of movement, which facilitates the subsequent secondary sorting of the stacked cardboards 3 by the overall limiting assembly, thereby improving the practicality of the device.

[0039] Reference Figure 2-3 and Figure 5The sorting limit assembly includes an electric cylinder 17 arranged inside the U-shaped loading rack 1, and the U-shaped loading rack 1 is provided with a mounting groove 18 for accommodating the electric cylinder 17. The output end of the electric cylinder 17 is fixedly connected with a sorting push plate 19 for sorting the cardboard 3. The opposite side of the two sorting push plates 19 is rotatably connected with a plurality of rollers 20. The side opposite to the sorting push plate 19 is fixedly provided with a plurality of L-shaped guide sliders 21. The outside of the mounting groove 18 is provided with a plurality of guide blocks 22 matched with the L-shaped guide sliders 21. The inside of the mounting groove 18 and the guide block 22 are provided with There is a guide slide groove 1 23 matching the L-shaped guide slider 21, and the arranging push plate 19 is clamped on the mounting groove 2 18 and the guide block 22 through multiple L-shaped guide sliders 21. Specifically, in the utility model, the conveyed cardboard 3 is aligned and arranged through the design of the arranging limit assembly, and the position of the cardboard 3 when lifting and loading is limited, so as to ensure the accuracy of the die-cutting position of the cardboard 3 and improve the molding quality of the cardboard 3 after die-cutting. Through the design of the L-shaped guide slider 21, the mounting groove 2 18 and the guide block 22, the stability of the arranging push plate 19 during the pushing process is guaranteed, and the actual use effect of the device is improved;

[0040] It should be noted that, in the present invention, the design of the roller 20 facilitates the cooperation with the subsequent feeding and lifting components to roll and convey the aligned cardboards 3, thereby improving the smoothness of the cardboard 3 lifting and feeding process.

[0041] Reference Figure 2-3 and Figure 6 The feeding and lifting assembly includes a plurality of feeding and lifting plates 24 arranged on one side of the sorting and limiting assembly, a plurality of through grooves 25 matching the feeding and lifting plates 24 are arranged on the tray 2 and the U-shaped limiting plate 4, a plurality of reinforcing strips 26 are arranged at the bottom of the feeding and lifting plates 24, and sliders 27 are fixedly connected to both ends of the reinforcing strips 26, and a guide slot 28 matching the slider 27 is opened on the U-shaped feeding rack 1, and a plurality of adjusting screws 29 are rotatably connected in the guide slot 28, and the slider 27 is threadedly connected to the adjusting screw 29;

[0042] A mounting groove 30 is provided at the bottom of the guide slide groove 28, one end of the plurality of adjusting screws 29 penetrates the guide slide groove 28 and is rotatably connected to the inner wall of the mounting groove 30, a section of the adjusting screw 29 located in the mounting groove 30 is fixedly connected to a driven gear 31, two driven gears 31 are meshed with each other, one side of one of the driven gears 31 is meshed with a driving gear 32, a rotating shaft 2 33 is fixedly provided in the middle of the driving gear 32, one end of the rotating shaft 2 33 is rotatably connected to the inner wall of the mounting groove 30, the other end of the rotating shaft 2 33 is connected to a driving motor 2 34, the driving motor 2 34 is fixedly arranged in the mounting groove 30, a section of the rotating shaft 2 33 located at the bottom of the driving gear 32 is fixedly provided with a synchronous pulley 1 35, and a synchronous pulley 1 35 is sleeved with a synchronous Specifically, in the utility model, through the design of the feeding and lifting component, the cardboard 3 stacked on the tray 2 is lifted upward, so that the cardboard 3 is separated from the tray 2, and cooperates with the sorting and limiting component to lift the stacked cardboard 3 for feeding, which is convenient for the subsequent die-cutting processing of the cardboard 3 and improves the practical performance of the device. Through the design of the reinforcing strip 26, the connection strength between the multiple feeding and lifting plates 24 is improved, and the service life of the feeding and lifting component is extended. Through the design of the driven gear 31, the driving gear 32, the second shaft 33, the second driving motor 34, the synchronous pulley 1 35 and the synchronous belt, only one driving motor 2 34 is needed to drive the two adjusting screws 1 29 to rotate synchronously, so that the moving block threadedly connected to the adjusting screw 1 29 can perform synchronous lifting and lowering movements, so that the feeding and lifting plate 24 can always remain horizontal, thereby improving the practical performance of the device;

[0043] When it is necessary to load the cardboard 3, the staff only needs to use a ground bull or a small electric forklift to push the pallet 2 into the guide rail 5, and control the fork rod of the ground bull or the small electric forklift to descend so that the pallet 2 is placed on the guide rail 5, and the pallet 2 and the cardboard 3 carried on the guide rail 5 can be transported through the cooperation of the roller 17, the rotating shaft 18, the sprocket 10, the sprocket 2 11, the sprocket 3 12, the sprocket 4 13, the transmission shaft 15 and the driving motor 16. In this process, the cardboard 3 on the pallet 2 collides with the inner wall of the U-shaped limiting plate 4 under the action of the inertia of movement. When the pallet 2 and the cardboard 3 are transported to the specified position, the staff simultaneously starts the electric cylinder 17 located inside the U-shaped loading rack 1, so that the output ends of the two electric cylinders 17 are fixedly connected. The sorting push plate 19 moves synchronously relative to each other, thereby sorting and limiting the stacked cardboards 3 on the tray 2, and then the staff starts the driving motor 2 34, so that the two adjusting screws 29 inside the U-shaped loading rack rotate synchronously under the action of the synchronous pulley 35, the synchronous belt, the driving gear 32, the rotating shaft 2 33 and the driven gear 31, so that the moving block threadedly connected on the adjusting screw 29 drives the loading lifting plate 24 to move upward, and the loading lifting plate 24 passes through the through slot 25 to lift the cardboard 3 from the tray 2, and with the cooperation of the sorting and limiting components, the stacked cardboards 3 are loaded in an orderly manner, and then the staff controls the driving motor 16 to reverse, so that the tray 2 placed on the roller 7 can be unloaded, and the loading process of the cardboard 3 is completed.

[0044] Embodiment 2

[0045] This embodiment is further optimized on the basis of the first embodiment. In the process of feeding, the existing die-cutting machines mostly feed the stacked cardboards 3 in sequence by piercing needles. The feeding method of piercing the cardboards 3 with needles can easily cause unnecessary damage to the surface of the cardboards 3, affecting the molding quality of the cardboards 3 after die-cutting.

[0046] Reference Figure 7-8The U-shaped loading rack 1 is provided with a pushing assembly for facilitating the sequential discharge of the cardboard 3. The pushing assembly includes a discharge pushing plate 36 and a receiving plate 37. The top of the discharge pushing plate 36 is fixedly provided with an electric cylinder 2 38. The U-shaped loading rack 1 is provided with a groove 39 matching the electric cylinder 2 38. The output end of the electric cylinder 2 38 is fixedly connected with a pushing plate 40 for pushing the cardboard 3. The top of the receiving plate 37 is rotatably connected with a receiving roller 41 for flattening the cardboard 3. The U-shaped loading rack 1 is provided with a plurality of rollers 3 42 for conveying the cardboard 3 in cooperation with the pushing plate 40 and the receiving roller 41. The tops of the pushing plate 40 and the receiving roller 41 are on the same horizontal line. The U-shaped loading rack 1 is provided with a guide slide matching the discharge pushing plate 36 and the receiving plate 37. Slot three 43, the discharging push plate 36 and the receiving plate 37 are slidably clamped inside the guide slide slot three 43, and the guide slide slot three 43 is rotatably connected with an adjusting screw rod two 44, and the discharging push plate 36 and the receiving plate 37 are both threadedly connected to the adjusting screw rod two 44. Specifically, in the utility model, through the design of the discharging push plate 36, the electric cylinder two 38 and the push plate 40, the stacked cardboards 3 are pushed one by one, and through the cooperation between the multiple rollers three 42 rotatably connected to the top of the U-shaped feeding frame 1 and the multiple receiving rollers 41 rotatably connected to the receiving plate 37, the pushed cardboards 3 are fed and conveyed, so that they enter the die-cutting machine in turn for die-cutting, thereby avoiding the damage to the cardboard 3 caused by traditional needle feeding, and further improving the molding quality of the cardboard 3 after die-cutting;

[0047] When the stacked cardboards 3 are pushed one by one, the staff starts the electric cylinder 2 38 so that the push plate 40 at the output end of the electric cylinder 2 38 pushes one of the stacked cardboards 3, and the cardboard 3 is transported to the die-cutting machine for die-cutting through the cooperation of the roller 3 42 and the receiving roller 41.

[0048] Reference Figure 8One end of the adjusting screw rod 2 44 is rotatably connected to the inner wall of the guide slide groove 3 43, and the other end of the adjusting screw rod 2 44 passes through the guide slide groove 3 43 and extends to the outside of the U-shaped loading rack 1. An L-shaped mounting plate 45 is fixedly arranged on the top of the U-shaped loading rack 1, and a driving motor 3 46 is fixedly arranged on the L-shaped mounting plate 45. The output end of the driving motor 3 46 passes through the L-shaped mounting plate 45 and is fixedly connected to one of the adjusting screw rods 2 44. A synchronous pulley 2 47 and a synchronous pulley 3 48 are sequentially arranged on the adjusting screw rod 2 44 on the discharging push plate 36, and a synchronous pulley 4 matching the synchronous pulley 3 48 is fixedly arranged on the adjusting screw rod 2 44 on the receiving plate 37. 49, the synchronous pulley 2 47, the synchronous pulley 3 48 and the synchronous pulley 4 49 are all sleeved with a synchronous belt for transmission. Specifically, in the utility model, through the design of the L-shaped mounting plate 45, the driving motor 3 46, the synchronous pulley 2 47, the synchronous pulley 3 48, the synchronous pulley 49 and the synchronous belt, when the staff needs to push and load the cardboard 3 of different thicknesses, they only need to start the driving motor 3 46 to drive the multiple adjusting screws 2 44 to rotate synchronously under the action of the synchronous pulley 2 47, the synchronous pulley 3 48, the synchronous pulley 49 and the synchronous belt, so that the top of the push plate 40 and the receiving roller 41 are always at the same height during the adjustment process, thereby ensuring the normal operation of the pushing assembly.

[0049] The use process of a feeding device for a die-cutting machine provided by the utility model is as follows:

[0050] When it is necessary to load the cardboard 3, the staff only needs to use a ground bull or a small electric forklift to push the pallet 2 into the guide rail 5, and control the fork rod of the ground bull or the small electric forklift to descend so that the pallet 2 is placed on the guide rail 5, and the pallet 2 and the cardboard 3 carried on the guide rail 5 can be transported through the cooperation of the roller 17, the rotating shaft 18, the sprocket 10, the sprocket 2 11, the sprocket 3 12, the sprocket 4 13, the transmission shaft 15 and the driving motor 16. In this process, the cardboard 3 on the pallet 2 collides with the inner wall of the U-shaped limiting plate 4 under the action of the inertia of movement. When the pallet 2 and the cardboard 3 are transported to the specified position, the staff simultaneously starts the electric cylinder 17 located inside the U-shaped loading rack 1, so that the output ends of the two electric cylinders 17 are fixedly connected. The sorting push plate 19 moves relatively synchronously, so as to sort and limit the stacked cardboards 3 on the tray 2, and then the staff starts the driving motor 2 34, so that the two adjusting screws 29 inside the U-shaped loading rack rotate synchronously under the action of the synchronous pulley 35, the synchronous belt, the driving gear 32, the rotating shaft 2 33 and the driven gear 31, so that the moving block threadedly connected on the adjusting screw 29 drives the loading lifting plate 24 to move upward, and the loading lifting plate 24 passes through the through slot 25 to lift the cardboard 3 from the tray 2, and with the cooperation of the sorting and limiting assembly, the stacked cardboards 3 are loaded in an orderly manner, and then the staff controls the driving motor 16 to reverse, so that the tray 2 placed on the roller 7 can be unloaded, and the loading process of the cardboard 3 is completed;

[0051] When the stacked paperboards 3 are pushed one by one, the staff starts the electric cylinder 2 38, so that the push plate 40 at the output end of the electric cylinder 2 38 pushes one of the stacked paperboards 3, and the paperboard 3 is transported to the die-cutting machine for die-cutting through the cooperation of the roller 3 42 and the receiving roller 41;

[0052] When it is necessary to push and load cardboards 3 of different thicknesses, it is only necessary to start the driving motor 3 46 to drive the multiple adjusting screws 2 44 to rotate synchronously under the action of the synchronous pulley 2 47, the synchronous pulley 3 48, the synchronous pulley 49 and the synchronous belt, thereby adjusting the height of the pushing plate 40 and the receiving roller 41, so that cardboards 3 of different thicknesses can be pushed.

[0053] The preferred embodiments of the utility model disclosed above are only used to help explain the utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the utility model to only specific implementation methods. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the utility model, so that technicians in the relevant technical field can well understand and use the utility model. The utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A feeding device for a die-cutting machine, comprising a U-shaped feeding frame (1) and a feeding conveying mechanism, characterized in that: The conveying and loading mechanism is arranged on one side of the U-shaped loading rack (1); a tray (2) is slidably carried on the conveying and loading mechanism; a plurality of paperboards (3) to be processed are stacked on the tray (2); a U-shaped limiting plate (4) is provided on the tray (2) to prevent the paperboards (3) from falling; the conveying and loading mechanism comprises a conveying component, a sorting limiting component and a loading and lifting component.

2. A feeding device for a die-cutting machine according to claim 1, characterized in that: The conveying assembly comprises guide rails (5) arranged on both sides of the interior of the U-shaped loading rack (1), a slide groove (6) is arranged on the opposite side of the two guide rails (5), a plurality of rollers (7) are arranged inside the slide groove (6), a rotating shaft (8) is fixedly arranged in the middle of the plurality of rollers (7), a mounting groove (9) is arranged on the back side of the guide rail (5), one side of the rotating shaft (8) is rotatably connected to the inner wall of the slide groove (6), and the other side of the rotating shaft (8) passes through the slide groove (6) and is rotatably connected to the inner wall of the mounting groove (9); A sprocket wheel one (10) and a sprocket wheel two (11) are fixedly arranged in sequence on the side of the rotating shaft one (8) located in the middle of the guide rail (5) away from the roller one (7); a sprocket wheel three (12) and a sprocket wheel four (13) are respectively arranged on the multiple rotating shafts one (8) located on both sides of the rotating shaft one (8) to cooperate with the sprocket wheel one (10) and the sprocket wheel two (11); the sprocket wheel one (10), the sprocket wheel two (11), the sprocket wheel three (12) and the sprocket wheel four (13) are all meshed with chains (14) for transmission on the outside; the opposite ends of the two rotating shafts one (8) pass through the slide groove (6) and are fixedly connected to a transmission shaft (15); one end of one of the rotating shafts one (8) passes through the mounting groove one (9) and is connected to a driving motor one (16).

3. A feeding device for a die-cutting machine according to claim 1, characterized in that: The sorting and limiting assembly comprises an electric cylinder (17) arranged inside the U-shaped loading frame (1), a mounting groove (18) for accommodating the electric cylinder (17) is provided on the U-shaped loading frame (1), an output end of the electric cylinder (17) is fixedly connected with a sorting push plate (19) for sorting the cardboard (3), a plurality of rollers (20) are rotatably connected to the opposite sides of the two sorting push plates (19), a plurality of L-shaped guide sliders (21) are fixedly arranged on the opposite side of the sorting push plates (19), a plurality of guide blocks (22) matching with the L-shaped guide sliders (21) are arranged outside the mounting groove (18), a guide slide groove (23) matching with the L-shaped guide sliders (21) is arranged inside the mounting groove (18) and the guide block (22), and the sorting push plate (19) is clamped on the mounting groove (18) and the guide block (22) through the plurality of L-shaped guide sliders (21).

4. A feeding device for a die-cutting machine according to claim 1, characterized in that: The loading and lifting assembly comprises a plurality of loading and lifting plates (24) arranged on one side of the sorting and limiting assembly, the tray (2) and the U-shaped limiting plate (4) are provided with a plurality of through grooves (25) matched with the loading and lifting plates (24), the bottom of the loading and lifting plates (24) are provided with a plurality of reinforcing strips (26), both ends of the reinforcing strips (26) are fixedly connected with sliders (27), the U-shaped loading rack (1) is provided with a guide slot 2 (28) matched with the slider (27), a plurality of adjusting screws 1 (29) are rotatably connected in the guide slot 2 (28), and the slider (27) is threadedly connected to the adjusting screw 1 (29); A mounting groove (30) is provided at the bottom of the guide slide groove (28), one end of each of the plurality of adjusting screws (29) passes through the guide slide groove (28) and is rotatably connected to the inner wall of the mounting groove (30), a section of each adjusting screw (29) located in the mounting groove (30) is fixedly connected to a driven gear (31), two driven gears (31) are meshed with each other, one side of one of the driven gears (31) is meshed with a driving gear (32), and the driving gear (32) is fixedly connected to the driven gear (31). A rotating shaft 2 (33) is fixedly arranged in the middle of the gear (32), one end of the rotating shaft 2 (33) is rotatably connected to the inner wall of the mounting groove 3 (30), the other end of the rotating shaft 2 (33) is connected to a driving motor 2 (34), the driving motor 2 (34) is fixedly arranged in the mounting groove 3 (30), a section of the rotating shaft 2 (33) located at the bottom of the driving gear (32) is fixedly arranged with a synchronous pulley 1 (35), and a synchronous belt for transmission is sleeved on the synchronous pulley 1 (35).

5. A feeding device for a die-cutting machine according to claim 1, characterized in that: The U-shaped loading rack (1) is provided with a pushing assembly inside to facilitate the sequential discharge of the cardboard (3), the pushing assembly comprising a discharge pushing plate (36) and a receiving plate (37), the top end of the discharge pushing plate (36) is fixedly provided with an electric cylinder (38), the U-shaped loading rack (1) is provided with a groove (39) matching the electric cylinder (38), the output end of the electric cylinder (38) is fixedly connected with a pushing plate (40) for pushing the cardboard (3), the top end of the receiving plate (37) is rotatably connected with a receiving roller (41) for flattening the cardboard (3), the U-shaped loading rack (1) is provided with a plurality of rollers (41) for flattening the cardboard (3) and the pushing plate (40) are fixedly connected with the output end of the electric cylinder (38). The U-shaped loading rack (1) is provided with a guide slot three (43) matching with the discharge push plate (36) and the receiving plate (37); the discharge push plate (36) and the receiving plate (37) are slidably mounted inside the guide slot three (43); an adjusting screw rod two (44) is rotatably connected inside the guide slot three (43); the discharge push plate (36) and the receiving plate (37) are both threadedly connected to the adjusting screw rod two (44).

6. A feeding device for a die-cutting machine according to claim 5, characterized in that: One end of the second adjusting screw rod (44) is rotatably connected to the inner wall of the third guiding slide groove (43), and the other end of the second adjusting screw rod (44) passes through the third guiding slide groove (43) and extends to the outside of the U-shaped loading rack (1). An L-shaped mounting plate (45) is fixedly provided at the top of the U-shaped loading rack (1), and a driving motor (46) is fixedly provided on the L-shaped mounting plate (45). The output end of the driving motor (46) passes through the L-shaped mounting plate (45) and is connected to one of the adjusting screw rods (44). The second section screw rod (44) is fixedly connected, wherein the second adjusting screw rod (44) located on the discharge push plate (36) is provided with a second synchronous pulley (47) and a third synchronous pulley (48) in sequence, and the second adjusting screw rod (44) located on the receiving plate (37) is fixedly provided with a fourth synchronous pulley (49) that matches the third synchronous pulley (48), and the second synchronous pulley (47), the third synchronous pulley (48) and the fourth synchronous pulley (49) are all provided with a synchronous belt for transmission.

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